328731117 has 16 divisors (see below), whose sum is σ = 514936128. Its totient is φ = 183905280.

The previous prime is 328731097. The next prime is 328731121. The reversal of 328731117 is 711137823.

It is not a de Polignac number, because 328731117 - 2¹¹ = 328729069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328731197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382708 + ... + 383565.

It is an arithmetic number, because the mean of its divisors is an integer number (32183508).

Almost surely, 2^328731117 is an apocalyptic number.

It is an amenable number.

328731117 is a deficient number, since it is larger than the sum of its proper divisors (186205011).

328731117 is a wasteful number, since it uses less digits than its factorization.

328731117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766300.

The product of its digits is 7056, while the sum is 33.

The square root of 328731117 is about 18130.9436323651. The cubic root of 328731117 is about 690.1554764113.

It can be divided in two parts, 328 and 731117, that added together give a triangular number (731445 = T₁₂₀₉).

The spelling of 328731117 in words is "three hundred twenty-eight million, seven hundred thirty-one thousand, one hundred seventeen".